Heel-nail



UNITED STATES PATENT OFFIcE.

FREEBORN F. RAYMOND, 2D, OF NEYVTON, MASSACHUSETTS.

HEEL-NAIL.

SPECIFICATION forming part of Letters Patent No. 410,675, datedSeptember 10, 1889.

Application filed March 19, 1885.

To all whom it may concern.-

Be it known that I, FREEBORN F. RAYMOND, 2d, of Newton,in the county ofMiddlesex and State of Massachusetts, a citizen of the United States,have invented a new and useful Improvement in Heel-\ ails, of which thefollowing is a full, clear, and exact description, reference being hadto the accompanying drawings, forming a part of this specification, inexplaining its nature.

The invention relates to a heel nail or fast ening, hereinafter setforth.

In formation the nail is cut or punched from a sheet-metal plate, andcomprises a shank provided with flat parallel sides, tapering edges, andshoulders or projections which are homogeneous with and extend laterallyfrom the shank near the upper end thereof to form a head or butt.

In the drawings I have illustrated the nail and the manner of making thesame, and therein- Figure 1 is a plan view of a sheet-metal platerepresenting the manner of forming my improved nails into twocomb-strips, from which the nails are individually severed. Fig. 2 is anend elevation of the said sheet-metal plate. Fig. 3 is a detail view ofone of the combs before the nails are severed. Fig. 4 is a detail view,in side elevation, of a complete nail. Fig. 5 is an edge elevation ofthe nail. Fig. 6 represents the nails as being formed in a singlecomb-strip. Fig. 7 is an end elevation of the plate shown in Fig. 0.Figs. 8 and 9 show nails with butts of modified construction. Figs. 10and 11 are cross-sections of metal plates from which the "nails shown inFigs. 8 and 9 are formed. Fig. 12 is a vertical section of a heel-blankto represent the application or use of the nails.

The nail is constructed from a strip or plate of sheet metal either bypunching with dies or otherwise cutting a double or single comb orseries of attached nails therefrom, as shown in Figs. 1, 3, and (i, andalso by punching or removing from the edges or edge of the stripsections to provide butts or ends to the nails of the characterhereinafter specified.

111 Fig. l, A represents a metal plate of a width sufficient to form twocomb-str-ips A A and at one end thereof is shown the shape Serial No.159,378. (No model.)

these strips bear in relation to each other after the plate has beensubmitted to the operation of the punching-machin e,which removes fromthe plate the sections a, extending diagonally across the plate, asshown, to form the shanks a, and to remove the sections to form thebutts, heads, or ends a of the nails. In Fig. 3 a part of one comb isshown removed and ready to form the completed nails, as shown in Figs. 4and 5, and in Fig. 6 a single comb is shown in course of construction.Figs. 10 and 11 also show other forms of plates from which the nail maybe formed and still preserve the leading feature of the invention.

Having thus described the manner of producing my invention, aside fromthe various forms of plates from which it may be constructed, the saidnail consists, essentially, of a shank or body having parallel fiatsides a and a and tapering edges of and a. At the upper part of theshank are lateral projections or Wings I), which provide for theformation of a projecting head or butt a The wings or projections 12 areintegrally formed with the edges of the shank at the same time that itis cut from the metal plate, as hereinbefore referred to. As shown inFig. 5, a uniform thickness of metal is preserved throughout the entirenail, being the exact thickness of the sheet metal plate from which itis formed. This uniformity of thickness of the nail could notconveniently and with utility be accomplished by means other than thosehereinbefore referred to, and the parallel surfaces (0 and a are devoidof projections.

In Figs. 8 and 9 the said butt or head is shown slightly modified inconstruction. In Fig. 8 the butt is formed with inclined edges extendingdown and slightly inward toward each other to the lateral wings orprojections Z), and in Fig. 9 the said head orbutt is shown withoverhanging shoulders 0, adapted to sink into the material of the toplift of a heel. While these variations may be conveniently employed, Iprefer to use the form of nail hereinbefore set forth as being formedfrom a flat sheet of metal.

In use the severed nail is driven with such force that the head is verylargely or wholly embedded in the upper lift of the heel-blank, asshown. WVhen driven, the butt or head of the nail is left projectingfrom the surface of the top lift for an obvious purpose.

I am aware that attempts have heretofore been made to produce a nail ofthis character. In the nails heretofore constructed either a collar wasmounted on and surrounded the nailblank or else shoulders were swagedfrom the metal of the blank. Where a collar was used, it was liable todisplacement and fracture in driving the nail, and formed a projectionex tending entirely around the nail. Aside from the inherentdisadvantages and weaknesses of the collar, it could not be readilyembedded in the top lift. In forming swaged projections the nail blankwas necessarily unequal in 'at its upper end than the remainder of theshank, the said nails being formed from sheet metal, as described.

FREEBORN F. RAYMOND, 2D. Witnesses:

JULIA M. DOLAN, FRED. B. DOLAN.

